package org.eoti.elec;

/**
 * The MIT License
 * <p/>
 * Copyright (c) 2009 Malachi de AElfweald (malachid@gmail.com)
 * <p/>
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * <p/>
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
import static org.eoti.elec.State.*;

public class NOTGate
extends DigitalComponent
{
	public static final String NAME = "not";

	protected static String PIN_IN_NAME = "IN";
	protected static String PIN_OUT_NAME = "OUT";

	public NOTGate()
	{
		super(NAME, 1);
		addPin( (new Pin()).withName(PIN_IN_NAME).withPinNumber(0).withType(Pin.Type.Input).withState(Low) );
		addPin( (new Pin()).withName(PIN_OUT_NAME).withPinNumber(1).withType(Pin.Type.Output).withState(Low) );
	}

	public void tick()
	{
		boolean pinIn = false;
		switch(getPin(PIN_IN_NAME).getState())
		{
			case High:
				pinIn = true;
				break;
			case Low:
				pinIn = false;
				break;
			default:
				getBufferedPin(PIN_OUT_NAME).setState(State.Unknown);
				return;
		}
		getBufferedPin(PIN_OUT_NAME).setState( pinIn ? State.Low : State.High );
		super.tick();
	}
}
